* {
  margin: 0;
  padding: 0;
  list-style: none;
  text-decoration: none;
}
a {
  color: #fff;
}
#head {
  background: url(images/bodybg.png) repeat-y;
  background-size: cover;
}
#head .head {
  width: 1024px;
  height: 100px;
  margin: 0 auto;
  background: url(images/head.jpeg) no-repeat;
  background-size: cover;
}
#head .nav_bg {
  background-color: #000;
}
#nav {
  width: 1024px;
  height: 40px;
  margin: 0 auto;
  background-size: cover;
}
#nav ul {
  float: right;
}
#nav li {
  float: left;
  width: 100px;
  text-align: center;
  line-height: 40px;
  position: relative;
}
#nav li:hover {
  background-color: #999;
}
#nav .xla{
  position: absolute;
  background-color: #aaa;
  z-index: 10;
  display: none;
}
#nav .li_x:hover .xla{
  display: block;
}

#banner {
  width: 800px;
  height: 460px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}
#banner .img {
  width: 780px;
  height: 440px;
}
#banner li.btn{
  float: left;
  margin-left: 10px;
  width: 180px;
  height: 10px;
  background-color: #999;
}
#banner li.btn_a{
  float: left;
  margin-left: 10px;
  width: 180px;
  height: 10px;
  
  background-color: #777;
}
.no {
  display: none;
}

#kangyi {
  width: 1024px;
  height: 550px;
  margin: 20px auto;
}
#kangyi h1 {
  margin-bottom: 20px;
}
#kangyi dl {
  border-bottom: #999 solid 1px;
  width: 300px;
  height: 460px;
  margin: 12px;
  float: left;
}
#kangyi dl dt {
  float: left;
}

#kangyi dl dt img {
  width: 300px;
  height: 170px;
}
#kangyi dl dd h2 {
  font-size: 20px;
}
#kangyi p {
  text-indent: 2em;
}

#footer {
  padding-top: 20px;
  width: 100%;
  height: 120px;
  background-color: #000;
  text-align: center;
}
#footer p {
  color: #fff;
}
